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Gamma-aminobutyric acid (GABA) A receptor, alpha 2
Symbols GABRA2;
External IDs OMIM137140 MGI95614 HomoloGene20217 GeneCards: GABRA2 Gene
RNA expression pattern
PBB GE GABRA2 207014 at tn.png
PBB GE GABRA2 216039 at tn.png
More reference expression data
Species Human Mouse
Entrez 2555 14395
Ensembl ENSG00000151834 ENSMUSG00000000560
UniProt P47869 Q544G1
RefSeq (mRNA) NM_000807 XM_001002037
RefSeq (protein) NP_000798 XP_001002037
Location (UCSC) Chr 4:
45.95 - 46.09 Mb
Chr 5:
71.24 - 71.37 Mb
PubMed search [1] [2]

Gamma-aminobutyric acid receptor subunit alpha-2 is a protein that in humans is encoded by the GABRA2 gene.[1]

GABA is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABA-A receptors, which are ligand-gated chloride channels. Chloride conductance of these channels can be modulated by agents such as benzodiazepines that bind to the GABA-A receptor. At least 16 distinct subunits of GABA-A receptors have been identified.[1]


See also


Further reading

  • Matthews AG, Hoffman EK, Zezza N, et al. (2007). "The role of the GABRA2 polymorphism in multiplex alcohol dependence families with minimal comorbidity: within-family association and linkage analyses.". Journal of studies on alcohol and drugs 68 (5): 625–33. PMID 17690794.  
  • Drgon T, D'Addario C, Uhl GR (2007). "Linkage disequilibrium, haplotype and association studies of a chromosome 4 GABA receptor gene cluster: candidate gene variants for addictions.". Am. J. Med. Genet. B Neuropsychiatr. Genet. 141 (8): 854–60. doi:10.1002/ajmg.b.30349. PMID 16894595.  
  • Agrawal A, Edenberg HJ, Foroud T, et al. (2007). "Association of GABRA2 with drug dependence in the collaborative study of the genetics of alcoholism sample.". Behav. Genet. 36 (5): 640–50. doi:10.1007/s10519-006-9069-4. PMID 16622805.  
  • Dick DM, Bierut L, Hinrichs A, et al. (2006). "The role of GABRA2 in risk for conduct disorder and alcohol and drug dependence across developmental stages.". Behav. Genet. 36 (4): 577–90. doi:10.1007/s10519-005-9041-8. PMID 16557364.  
  • Tian H, Chen HJ, Cross TH, Edenberg HJ (2005). "Alternative splicing and promoter use in the human GABRA2 gene.". Brain Res. Mol. Brain Res. 137 (1-2): 174–83. doi:10.1016/j.molbrainres.2005.03.001. PMID 15950776.  
  • Chou KC (2004). "Modelling extracellular domains of GABA-A receptors: subtypes 1, 2, 3, and 5.". Biochem. Biophys. Res. Commun. 316 (3): 636–42. doi:10.1016/j.bbrc.2004.02.098. PMID 15033447.  
  • Edenberg HJ, Dick DM, Xuei X, et al. (2004). "Variations in GABRA2, encoding the alpha 2 subunit of the GABA(A) receptor, are associated with alcohol dependence and with brain oscillations.". Am. J. Hum. Genet. 74 (4): 705–14. doi:10.1086/383283. PMID 15024690.  
  • Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs.". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.  
  • Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMID 12477932.  
  • Bonnert TP, McKernan RM, Farrar S, et al. (1999). "theta, a novel gamma-aminobutyric acid type A receptor subunit.". Proc. Natl. Acad. Sci. U.S.A. 96 (17): 9891–6. doi:10.1073/pnas.96.17.9891. PMID 10449790.  
  • Russek SJ (1999). "Evolution of GABA(A) receptor diversity in the human genome.". Gene 227 (2): 213–22. doi:10.1016/S0378-1119(98)00594-0. PMID 10023064.  
  • Hadingham KL, Wingrove P, Le Bourdelles B, et al. (1993). "Cloning of cDNA sequences encoding human alpha 2 and alpha 3 gamma-aminobutyric acidA receptor subunits and characterization of the benzodiazepine pharmacology of recombinant alpha 1-, alpha 2-, alpha 3-, and alpha 5-containing human gamma-aminobutyric acidA receptors.". Mol. Pharmacol. 43 (6): 970–5. PMID 8391122.  
  • Tögel M, Mossier B, Fuchs K, Sieghart W (1994). "gamma-Aminobutyric acidA receptors displaying association of gamma 3-subunits with beta 2/3 and different alpha-subunits exhibit unique pharmacological properties.". J. Biol. Chem. 269 (17): 12993–8. PMID 8175718.  

External links

This article incorporates text from the United States National Library of Medicine, which is in the public domain.



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